#537BBF#537BBF

#537BBF is a mid, moderate blue. Relative luminance 0.198; OKLCH L 58.4% C 0.114 H 260.5°. Best body text is #000000 at 4.95:1 contrast (WCAG AA passes).

Color values

HEX	#537BBF
RGB	rgb(83, 123, 191)
HSL	hsl(218, 46%, 54%)
HSV	hsv(218, 57%, 75%)
CMYK	cmyk(56.5%, 35.6%, 0%, 25.1%)
CIE-LAB	lab(51.57, 6.40, -39.87)
CIE-LCH	lch(51.57, 40.38, 279.11°)
OKLab	oklab(58.44% -0.0189 -0.1127)
OKLCH	oklch(58.44% 0.114 260.5)
XYZ	xyz(20.0510, 19.7649, 52.0385)
Luminance	0.1977 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#537BBF #BF9753

analogous

#53B1BF #537BBF #6153BF

triadic

#537BBF #BF537B #7BBF53

tetradic

#537BBF #BF53B1 #BF9753 #53BF61

square

#537BBF #BF53B1 #BF9753 #53BF61

split-complementary

#537BBF #BF6153 #B1BF53

monochromatic

#29436E #3A5E9B #537BBF #809DD0 #ACBFE0

Accessibility & contrast

On white

4.24

#537BBF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.95

#537BBF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #537BBF

4.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##537BBF	#FFFFFF	#000000	##000000
##537BBF	1.00	4.24	4.95	4.95
#FFFFFF	4.24	1.00	21.00	21.00
#000000	4.95	21.00	1.00	1.00
##000000	4.95	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5F80C2

Deuteranopia (green-blind)

#5276BE

Tritanopia (blue-blind)

#018A94

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #537bbf;
/* rgb */ color: rgb(83, 123, 191);
/* oklch */ color: oklch(58.4% 0.114 260.5);

Tailwind

colors: {
  custom: {
    50: '#8ba0d2',
    500: '#537bbf',
    950: '#000000',
  },
}

SCSS

$custom: #537bbf;
$custom-light: #8ba0d2;
$custom-dark: #000000;

JSON

{
  "hex": "#537bbf",
  "rgb": {
    "r": 83,
    "g": 123,
    "b": 191
  },
  "hsl": {
    "h": 217.778,
    "s": 45.763,
    "l": 53.725
  },
  "oklch": {
    "l": 0.58436,
    "c": 0.11431,
    "h": 260.5
  },
  "luminance": 0.19767
}

Semantic roles & 50–950 ramp

primary

#537BBF

secondary

#CEBDA0

accent

#A552D5

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0D0E14

muted

#7D7E82

Preview Lab

Preview with #537BBF

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →